Higher derivatives of operator functions in ideals of von Neumann algebras
Higher derivatives of operator functions in ideals of von Neumann algebras
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冯诺依曼代数理想中算子函数的高阶导数
DOI:
10.1016/j.jmaa.2022.126705
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发表时间:
2023
影响因子:
1.3
通讯作者:
Nikitopoulos, Evangelos A.
中科院分区:
文献类型:
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作者:
Nikitopoulos, Evangelos A.
Let M be a von Neumann algebra and a be a self-adjoint operator affiliated with M. We define the notion of an “integral symmetrically normed ideal” of M and introduce a space O C [k](R)⊆ C k (R) of functions R→ C such that the following holds: for any integral symmetrically normed ideal I of M and any f∈ O C [k](R), the operator function I sa∋ b↦ f (a+ b)− f (a)∈ I is k-times continuously Fréchet differentiable, and the formula for its derivatives may be written in terms of multiple operator integrals. Moreover, we prove that if f∈ B˙ 1 1,∞(R)∩ B˙ 1 k,∞(R) and f′ is bounded, then f∈ O C [k](R). Finally, we prove that all of the following ideals are integral symmetrically normed: M itself, separable symmetrically normed ideals, Schatten p-ideals, the ideal of compact operators, and–when M is semifinite–ideals induced by fully symmetric spaces of measurable operators.
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DOI:
--
发表时间:
2023
期刊:
影响因子:
--
作者:
山中克夫;小松崎麻緒;登藤直弥;野口代;内田達二;石川愛;Masaki Izumi
通讯作者:
Masaki Izumi
影响因子:
1.7
作者:
V. Peller
通讯作者:
V. Peller
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
A. K. Mishra;Non;A. K. Wahi;Non
通讯作者:
Non
影响因子:
0.4
作者:
V. Peller
通讯作者:
V. Peller
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
M. Czerwińska;A. Kamińska
通讯作者:
A. Kamińska